The new integrated switching circuits now support power supply applications for devices and displays with a continuous output power of up to 75W without a heat sink.
The InnoMux chipset employs a unique, single-stage power architecture that reduces losses in display applications by 50% compared to conventional designs, increasing overall efficiency to 91% in constant-voltage, constant-current LED backlight driver designs. Furthermore, by eliminating the need for post-regulation stages (i.e., boost and boost), TV and monitor designers can halve the number of components, improving reliability and reducing manufacturing costs. With a high breakdown voltage of 750V, the PowiGaN InnoSwitch3-MX chips are also extremely robust and highly resistant to the surges and line dips commonly seen in regions with unstable mains voltages.
The InnoSwitch3-MX flyback switching ICs combine the primary switch, primary-side controller, secondary-side synchronous rectification controller, and PI's innovative FluxLink™ high-speed communications link. The InnoSwitch3-MX receives control instructions from its chip partner, the InnoMux IC, which independently measures the load requirements of each output and directs the switching IC to deliver the correct amount of power to each output, maintaining precise current or voltage regulation.
Edward Png, Director of Product Marketing at Power Integrations, states: “By using our PowiGaN technology, we can address higher-performance applications in TVs, monitors, and home appliances that use LED displays. The chipset increases efficiency beyond the requirements of all mandatory regulations and improves manufacturers’ scores in EU efficiency labeling programs.”
Samples of the INN3478C, INN3479C, and INN3470C InnoSwitch3-MX integrated circuits are available now, with prices starting at $2.52, $3.14, and $3.71 respectively for orders of 10,000 units.
